Far sightedness

Far-sightedness, also known as hypermetropia, is a condition of the eye in which light is focused behind, instead of on, the retina.This results in close objects appearing blurry, while far objects may appear normal.As the condition worsens, objects at all distances may be blurry. Other symptoms may include headaches and eye strain. People may also experience accommodative dysfunction, binocular dysfunction, amblyopia, and strabismus.

The cause is an imperfection of the eyes.Often it occurs when the eyeball is too short, or the lens or cornea is misshapen. Risk factors include a family history of the condition, diabetes, certain medications, and tumors around the eye. It is a type of refractive error.Diagnosis is based on an eye exam.

Management can occur with eyeglasses, contact lenses, or surgery.Glasses are easiest while contact lenses can provide a wider field of vision.Surgery works by changing the shape of the cornea. Far-sightedness primarily affects young children, with rates of 8% at 6 years and 1% at 15 years.It then becomes more common again after the age of 40, affecting about half of people.

The signs and symptoms of far-sightedness are blurry vision, headaches, and eye strain.The common symptom is eye strain. Difficulty seeing with both eyes (binocular vision) may occur, as well as difficulty with depth perception.

Far-sightedness can have rare complications such as strabismus and amblyopia. At a young age, severe far-sightedness can cause the child to have double vision as a result of "over-focusing"

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